A study on the block fragmentation problem of ssd based on NAND flash memory

Authors:
Byungmin Ha;Hyunjin Cho;Young Ik Eom
Affiliations:
Sungkyunkwan University, Suwon, Korea;Sungkyunkwan University, Suwon, Korea;Sungkyunkwan University, Suwon, Korea
Venue:
Proceedings of the 5th International Conference on Ubiquitous Information Management and Communication
Year:
2011

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Abstract

A Solid State Disk (SSD) has recently occupied attentions as the next generation of memory media. Among researches of various technologies to increase the performance of the SSD, a parallel method has the most effect on the performance improvement. Thus, the SSD uses logical address striping technique. It contributes to a sharp increase of the feature of being parallel while some mapping methods might cause a problem in the use of block. This paper will verify the issues of changes of a block to fragments caused when the methods of logical address, striping and of hybrid mapping are used at the same time, and analyze impacts of the fragment issue on a block exploitation and ability.